From the campaign:
A card game for 1-4 players that pits you against the forces of The Great Cthulhu and other Elder Gods.
The Cards of Cthulhu is a solitaire card game that pits you against the forces of The Great Cthulhu and other Elder Gods. You will battle Cultists, slay Minions, banish Horrors, seal the Gates, and protect our world from the enveloping insanity that threatens to consume us all!
The Cards of Cthulhu is a great game for any gamer ages 12 and older. It doesn't matter if you are a rookie investigator or a battle-hardened investigator that has devoted your life to fighting the Great Cthulhu. Each game ends with you saving the world, or dooming us all to eternal torment, in 30 to 45 minutes for solo games, and 60 to 90 minutes for multiplayer games.